Interior Light System
WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
This system uses the multiplex communication system, so check diagnosis system of the multiplex communication system before you proceed with troubleshooting.
INTERIOR LIGHTS
| Symptom/Suspect Area | See | |
|---|---|---|
| All Lights Do Not Come ON | ||
| DOME Fuse | FUSES & CIRCUIT BREAKERS | |
| Driver's Door Courtesy Light Does Not Come ON When Driver's Door Is Opened | ||
| Driver's Door Courtesy Switch | STEP 3 - INSPECT DOOR COURTESY SWITCH CONTINUITY | |
| Wire Harness | Check Wiring Harness | |
| Body ECU | BODY CONTROL SYSTEM | |
| Passenger's Door Courtesy Light Does Not Come ON When Passenger's Door Is Opened | ||
| Passenger's Door Courtesy Switch | STEP 3 - INSPECT DOOR COURTESY SWITCH CONTINUITY | |
| Wire Harness | Check Wiring Harness | |
| Body ECU | BODY CONTROL SYSTEM | |
| Room Light Does Not Come On When Rear-Right Door Is Opened | ||
| Rear-Right Door Courtesy Switch | STEP 3 - INSPECT DOOR COURTESY SWITCH CONTINUITY | |
| Wire Harness | Check Wiring Harness | |
| Body ECU | BODY CONTROL SYSTEM | |
| Room Light | Check Wiring Harness | |
| Room Light Does Not Come On When Rear-Left Door Is Opened | ||
| Rear-Left Door Courtesy Switch | STEP 3 - INSPECT DOOR COURTESY SWITCH CONTINUITY | |
| Wire Harness | Check Wiring Harness | |
| Body ECU | BODY CONTROL SYSTEM | |
| Room Light | Check Room Light | |
| Only One Of The Bulbs Comes On | ||
| Bulb | Check Bulb | |
| Illumination Does Not Fade Out When All Doors Are Closed | ||
| Courtesy Switch | STEP 3 - INSPECT DOOR COURTESY SWITCH CONTINUITY | |
| Wire Harness | Check Wiring Harness | |
| Body ECU | BODY CONTROL SYSTEM | |
| Illumination Does Not Fade Out Immediately When Ignition Switch Is Turned To ACC Or On Within 15 Seconds After All Doors Are Closed | ||
| Ignition Switch | STEP 1 - INSPECT IGNITION SWITCH CONTINUITY | |
| ECU-B Fuse | FUSES & CIRCUIT BREAKERS | |
| Gauge Fuse | FUSES & CIRCUIT BREAKERS | |
| Wire Harness | Check Wiring Harness | |
| Body ECU | BODY CONTROL SYSTEM | |
| Illumination Does Not Fade Out Immediately When All Doors Are Locked Within 15 Seconds After They Are Closed | ||
| Door Unlock Detection Switch | APPROPRIATE DOOR UNLOCK DETECTION SWITCH TEST UNDER INSPECTION | |
| Wire Harness | Check Wiring Harness | |
| Body ECU | BODY CONTROL SYSTEM | |
| Interior Light Does Not Light Up (In Front Personal Light) | ||
| Bulb | Check Bulb | |
| Personal Light | STEP 2 - INSPECT INTERIOR LIGHT CONTINUITY | |
| Wire Harness | Check Wiring Harness | |
| Front Personal Light Does Not Light Up | ||
| Bulb | Check Bulb | |
| Personal Light | STEP 1 - INSPECT FRONT PERSONAL LIGHT CONTINUITY | |
| Wire Harness | Check Wiring Harness | |
| Rear Personal Light Does Not Light Up | ||
| Bulb | Check Bulb | |
| Interior Light | STEP 2 - INSPECT INTERIOR LIGHT CONTINUITY | |
| Wire Harness | Check Wiring Harness | |
| Luggage Compartment Light Does Not Light Up | ||
| Bulb | Check Bulb | |
| Luggage Compartment Door Courtesy Switch | STEP 5 - INSPECT LUGGAGE COMPARTMENT DOOR COURTESY SWITCH CONTINUITY | |
| Wire Harness | Check Wiring Harness | |
| Courtesy Light Does Not Light Up | ||
| Bulb | Check Bulb | |
| Door Courtesy Light | STEP 3 - INSPECT DOOR COURTESY SWITCH CONTINUITY | |
| Wire Harness | Check Wiring Harness | |
| Body ECU | BODY CONTROL SYSTEM | |